Weathering and Erosion
Geography High Weathering and Erosion Notes
A link to Geography High's excellent notes on the rock cycle, weathering, erosion and mass movements.
The - Stupid - Page - Of - Rocks
Rocks, essentially, are "collections" of different minerals in solid form, although some consist of just one mineral, such as limestone and sandstone. There are three types of rocks: sedimentary, igneous and metamorphic.